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 A024422 a(n) = floor(Sum_{m=1..n} Stirling2(n,m) / binomial(n-1,m-1)). 0
 1, 2, 3, 6, 12, 26, 62, 161, 448, 1338, 4274, 14524, 52289, 198678, 794065, 3328482, 14594217, 66779091, 318205958, 1575994324, 8098891289, 43115440260, 237435483669, 1350777074576, 7928871324300, 47965914249016, 298735745451523 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Table of n, a(n) for n=1..27. PROG (SageMath) print([int(sum(stirling_number2(n, m)/binomial(n-1, m-1) for m in [1..n])) for n in [1..27]]) # Andrey Zabolotskiy, Jan 09 2024 CROSSREFS Cf. A024423, A024424, A024425. Sequence in context: A152172 A001677 A339150 * A186771 A019525 A108915 Adjacent sequences: A024419 A024420 A024421 * A024423 A024424 A024425 KEYWORD nonn AUTHOR Clark Kimberling STATUS approved

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Last modified April 16 05:35 EDT 2024. Contains 371697 sequences. (Running on oeis4.)